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Help for Upgrade Cisco 6506-E IOS

Hi experts,

We have pair of 6506-E series switches and we would like to upgrade IOS to ver s72033-adventerprisek9_wan-mz.12.2(33)SXJ4 from 122-33.SXJ2 because it best meets our long term requirements. These switches configure as virtual switching system (VSS) with Virtual Switching Supervisor 720-10GE.

We need help to determine  best possible strategy to  minimize the downtime.  I took the following notes from cisco documents

VSS-SW#copy tftp: disk0:

VSS-SW#copy sw1-slot6-disk0: s72033-adventerprisek9_wan-mz.122-33.SXJ4.bin sw2-slot2-disk0:

VSS-SW# config t

VSS-SW(config)# no boot system

VSS-SW(config)# config-register 0x2102

VSS-SW(config)# boot system flash disk0:s72033-adventerprisek9_wan-mz.122-33.SXJ4.bin

VSS-SW(config)# end

VSS-SW# copy run start

VSS-SW# redundancy reload peer

VSS-SW# show redundancy <verify peer is back up in STANDBY-COLD state. Confirm the correct IOS is loaded>

VSS-SW# redundancy force-switchover <This will reload the active chassis and standby will take over.

Confirm the correct IOS is loaded>

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Help for Upgrade Cisco 6506-E IOS

eFSU reduces the downtime greater than FSU, see the following URL for requirements on eFSU

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